APL: Athletic Propulsion Labs TechLoom Wave Trainer in Mauve. Size 6, 6.5, 7, 7.5, 8.5, 9, 9.5, 10. High-elastic 3D stretch rebound TechLoom upper with rubber sole. Made in China. Lace-up front with heel pull. Supportive internal cage. Lightweight Propelium midsole. Durable outsole with forefoot crash pad. Convertible styling with option to remove laces. The 8mm drop from the heel to the forefoot places your foot in a natural position for efficient running. AHPR-WZ231. 2-2-009-122-652. Athletic Propulsion Labs offers unique sportswear that fuses technology, performance and fashion, enabling athletes to maximize their potential in all aspects of their life. The revolutionary products symbolize the ultimate intersection of design and performance.